A 3cm size object is placed 18 cm in front of concave mirror of focal length 12 CM at what distance from the mirror should a screen be placed to see a sharp image of the object on the screen also calculate the height of the image formed
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the screen should be placed at a distance of 36 cm to the left of mirror
the height of the image is -6 cm
minus sign indicates that the image is real and inverted
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